"Several of the concerns about Oracle's acquisition of Sun have revolved around how Unix technologies led by Sun would continue under the new ownership. As it turns out, Solaris users might not have much to worry about, as Oracle executives on Wednesday affirmed their commitment to preserving the efforts. In the case of Solaris, Oracle had already been a big supporter of the rival Linux operating system. Oracle has its own Enterprise Linux offering, based on Red Hat Enterprise Linux. For Oracle CEO Larry Ellison, the idea that Linux and Solaris are mutually exclusive is a false choice."

What I am trying to say is
1) v2.4 scaled really bad.
2) It is really difficult to scale good, it takes decades.
3) It is unrealistic to believe that v2.6 scales good.
4) I provide numerous links that support claim number 3).
5) Linux scales well on a large cluster, horizontal scaling.
6) Linux scales bad on a single computer, vertical scaling.